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add session system var delete_opt_to_truncate #20950
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huby2358
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ouyuanning,
aunjgr,
badboynt1,
daviszhen,
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aressu1985 and
heni02
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December 26, 2024 03:34
heni02
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Dec 26, 2024
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What type of PR is this?
Which issue(s) this PR fixes:
issue # #20864
What this PR does / why we need it:
cherry-pick
增加session级别配置项delete_opt_to_truncate控制是否要对delete from table; 优化成truncate, 默认为true, 即优化成trucate, 通过set session delete_opt_to_truncate = 0;关闭该优化